Sewing-machine.



G. S. HILL.

' SEWING MACHINE.

APPLICATION TILED mum. 1911.

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SEWING MACHINE.

APPLICATION FILED 11111.7,1911.

LWQMZ. Patented 1560.2, 1913.

3 SHEETS-SHEET 2.

Z1950 n X5 1 1 22' G. S. HILL.

SEWING MACHINE.

APPLICATION rum) marl, m1.

42 Patented Dec. 1.91s.

UNITED STATES PATENT QFFI'OE.

GEORGE S. HILL, OF BEVERLY. MASSACHUSETTS. ASSIGNOR TO UNITED SHOE MAGHINERY'COMPANY. OF PA TIZRSON. NEXV JERSEY, A CORPORATION OF NEW JERSEY.

Application filed March 7,

To all whom it may concern:

Be it known that I, Gannon S. llnm. a citizen of the United States, residing at Beverly, in the county of Essex and (four monwealth of ltlassachusetts, have invented certain Improvements in SeWing Machines, of which the following description. in connection with the accom anying drawings, is a specification, like re erence characters on the drawings indicating like parts in the several figures.

The invention relates to new and useful improvements in devices for controlling and operating the active parts of a sewing machine and the mannerof housing said operating and controlling device's.

An object of the invention is to p ovid a hollow casingwhich includes a work support and a supporting base, which hollow casing incloses and houses the stitch-forming elements, the feeding mechanism and the operating and controlling devices for said stitch-forming and feeding mechanisms.

A further object of the invention is to provide'the operating mechanism for the active parts of the sewing-machine, which mechanism includes a power shaft mounted on a movable work support and provided with a driving member, and also a driven member mounted on the base of the casing, with devices for shifting the power from the driven to the driving member.

A further object of the invention is to provide operating mechanism for the active elements of the sewing machine, which mechanism includes a power shaft mounted on a movable work support and provided with a fast pulley, together with a loose pulley mounted on the supporting base, and a belt capable of operatin either the loose or fast mlley, together wit means for shiftin the belt from one pulley to the other, with devices for locking the belt shifter when the fast pulley is moved away from the loose pulley.

A further object of the invention is to simplify the means for shifting the belt and for operating the stop'mechanism, whereby a single rock shaft may be caused to operate said arts in roper timed relation.

Specification of Letters Patent.

A urther a ject of the invention consists'] SEWING-MACHINE.

Patented Dee. 2.1913.

1911. sci-m1 No. 612.844.

in providing a sewing machine having a bender. which bender is positively moved into and out of contact with the material, with a stop mechanism, which stop mechanism will operate to stop the active parts of the machine when the bender is raised, so as to allow a tree feed of the material.

These and other objects will in part be obvious, and will in part be hereinafter more fully described.

In the drawings which show b way of illustration one embodiment of tie invention,--l igure l isa plan view with parts broken away and parts in section, showing a sewing machine with my improvements applied thereto; Fig. 2 is an end View partly in section, and with certain parts broken away to show the stitcl'i-torming devices, the bender, the feed-(merating devices and presser foot in side elevation Fig. 3 is a longitudinal sectional view, parallel with the driving shaft and in front thereof; Fig. 4 is a transverse sectional view, showing the belt shifter and the stop mechanism in side elevation; Fig.6 is a detail perspective view of the stop cam; Fig. 6 is a detail of the stop cam and stop lug cooperating therewith, showing the parts in position of overrnnning; Fig. 7 is a similar view, showing the parts returned to normal stopping position.

I have herein shown my invention as applied to a sewin machine which is especially adapted it)! finishing buttonholes, wherein the thrum ends and stay cords are gathered in line and are stitched to the under face of the work between the ends of adjacent buttonholes by blind stitches. The stitch-forming elements and the parts cooperating direetly therewith are more fully shown and described in my application Serial No. 539,756, filed Jannary24th, 1910.

The machine consists of a hollow casing 1, which -is adapted to inc-lose or house the active, elements of the sewingunaohine, and also the operating and controlling devices for said active elements. Saidcasing is di vided horizontally between its upper and lower faces, and is preferably hinged as at swung relative o the'lower portion to give '2, so that the upper portion thereof may be i brackets 3 and 4 is a driving shaft 5, which is provided at one end with a fast pulley 6, which I will refer to as the driving pulley. The brackets 3 and 4 are secured in any desired way to the under face of the work support, so that the driving shaft is supported by the work support and free of the base of the hollow casing.

The stitch-forming mechanism is preferably arranged beneath the work support, and.

consists of a needle 7 (see Fig. 2), which needle is carried by a bracket arm 8 mounts ed on a needle bar 9 reciprocating in a needle gate 10. The needle bar is preferably connected by a link to a crank on the main shaft 5, so that as the main shaftrotates the needle bar will be reciprocated.

The needle gate is swung laterally so as to vibrate the needle from one side of the line of stitching to the other by a link 11, which is connected to an eccentric member operated by the worm gear 12 which in turn is connected'to a gear on the main shaft 5. As the main shaft rotates, the needle will be reciprocated back and forth substantially in .the direction of feed, and in a line parallel to the under face of the work support.

Cooperating with the needle is any desired complemental stitch-forming mechanism. I have herein illustrated in a eneral way, a shuttle- 13 (see Fig. 2), W ich is mounted to oscillate about a vertical axis, and may be operated in any well known way from the main driving shaft 5. The material being stitched is placed on the work sup-- port 2, and in order that it may be bent into the path of the material, I have provided a bender 14 which is carried by a lever 15 pivoted to the hollow casing and extending beneath the work support, where saidlever carries staggered forks 16. The staggered forks 16 engage cams 17 mounted on the main shaft 5. I have provided two cams located side by side, and cotiperating with the staggered forks, so that the bender will be positively moved into contact withthe material, and positively retracted from the material, in order to allow a free feed of the material.

The feeding device consists of a feed dog 18, which is carried by a feed bar 19, pivoted at its rear end to the usual rockshaft, whereby it may be moved back and forth, and said. feed bar is moved up and down by an arm 20, carried by a shaft 21, which may be oscillated in any desired way from the main shaft support.

5 of the machine. Cooperating with the feed in order to hold the material during the stitching operation, I have provided the presser foot 22, which is carried by a lever 23 pivotedtoa hollow projection 24 on the casing 1. A rod 25 is connected to the lever Said rod carries a spring 26, which engages 'the wbrk support at one end and at its other end engages a threaded screw 27 secured to.

the tension on the needle thread may be re-. leased, so that, the work may be readily re-.

moved from the machine on the lifting ofthe presser foot, I have formed the lever 23 with a tension-releasing finger 30, which is a camsh'aped end adapted to enter between the tension disks and relieve the thread from all pressure when the presser foot is raised.

In the operation of the above parts, as

the main shaftrotates, the material will be bent by the bender 14 into the path of the needle 7, which enters and emerges on the same face of the material, and the loop in the needle thread is engaged by the shuttle 13, so that the needle thread is locked with the shuttle thread. The needle is moved from side to side of the line of stitching, so that the thrum ends and stay cord are covered by the needle and shuttle threads. The material is moved between needle punctures by the feed dog 18, which is brought-into engagement with the material when the bender is raised, and cooperating with the presser foot 22 moves the material so as to position the same for the next stitch.

The feed mechanism and the needle and shuttle mechanism are all supported in brackets carried by the under face of the work support, while the presser foot and bender are pivotally supported by the hollow projection extending above the work It will thus be seen that all the active parts of the sewing machine for feeding, bending and stitching the material are carried by the work support, so that if the work support be swung about the pivotal connectioh with the face, these parts will be raised with the work support and give ready access thereto.

As herein shown, the driving shaft 5 is operated by a belt 31, which may be connected with any suitable source of power. Located adjacent the driving pulley 6 and confronting the same when said work support is closed or in normal position, as shown in the drawings, is a loose pulley 32, which is carried by a stud 33 mounted on, the sup- 70 23, and extends beneath the work support.

porting base 1 of the hollow casing. As a means for shifting the belt from the fast pulley on the driving shaft 5 to the loose pulley 32, and vice versa, I have provided a belt shifter 34. Said belt shifter consists of a U-shaped arm adapted to straddle the belt,

and said arm is ad ustably supported by arock shaft 35, which extends transversely of the main shaft 5, and is carried by suitable pivot bearing screws 36, extending through the supporting base of the hollow casing. The rock shaft carries a second arm 37, which engages a headed rod 38 at its outer end, whereby the arm 37 may be depressed, and the belt shifter moved to carry the belt to the fast pulley. The rock shaft 3 is moved in the opposite direction by a spring, which will be hereinafter described.

In order to prevent the operation of the belt shifter when the work support is raised, which would result in throwing the belt oil from the loose pulley, I have provided a locking device for the belt shifter operating mechanism. Said locking device consists of a latch 39 (see Fi 4), which is pivotally supported in suitab e bearings 40 formed on the supporting base. A spring 41 engages said latch at one end, and-at its other end engages the supporting base, and will nor-' mally hold the latch swung to the left, as viewed in Fig. 4. A locking lug 42 projects laterally from the latch 39. A cam lug 43 is mounted on the under face of the work support and positioned so as to engage the upper rounded end 44 of the latch 39. When the work s'upport is closed, as shown in Fig. 4, the cam lug 43will hold the latch 39 swung to the right, as viewed in this figure and'out of the path of movement of the arm 37. If the arm 37 is raised, and the belt shifted to the loose pulley, the extreme outer end. of the arm will be carried to a position above the locking lug 42 on the latch 39. When the parts are in this position, if the work support is raised, the cam -lug 43 will be withdrawn from contact with the latch 39, and the spring 41 will throw the same to the left, so as to carry the locking lug 42 underneath the arm 37 and prevent the operator from depressing the treadle and shift ing the belt until the latch is moved out of the path of the lever. The lowering of the work support will cause the cam lug 43 toengage the latch and release the lever 37.

In a machine of the character wherein the header is positively moved into and. out of contact with the material, it isessential to provide some means for stopping the machine with the bender raised from the ma-' t0l'ltll, so that the material to be operated upon may be readily inserted underneath the bender or removed therefrom. In order to accomplish the stopping of the machine with the parts in the predetermined position above noted, I have mounted on the driving shaft 5 a stop cam -15. Cooperating with the stop cam 15 is'a stop lug 46. This stop lug isrlmnpcd in the lower end of a bracket 17, which is mounted to swing on a rod 48 mounted in the bracket 13 at one end, and in a hollow screw 4) at the other end. .'lhis bracket -17 is free to more longitndinally on the rod 18. A spring 50 encircles the rod 48, and bears at one end against the bracket 47. The other end of the spring engages the hollow screw it), and by adjusting the screw the tension on the spring 50 may be varied. The stop lug -16 extends throughthe bracket and engages a forked arm 51 on the rock shaft 35. it will, therefore, be seen that when the rock shaft 35 is oscillated, tho forked arm 51 will swing the bracket i7, so as to bring the stop lug into the path of movement of the stop cam 45, or move the saline out of the path of movement of said stop cam. This forked arm 51 has an open upper end, which allows the stop lug 46 to moveout of and into the same, as the work support is raised or lowered.

A rod 52 has a universal connection with the outer end of the stopv lug -16, and at its other end extends through a bracket 53 carried by a downwardly projecting stud 54 secured to a bearing 55 formed on the under face of the work support. end of the rod' 52 as viewed in Fig. 3 is connected to a rock lever 56, which has an arm 57 projecting underneath the rod 26 connected with the lever carrying the presser foot. A spring 58 encircles the rod 52, and at one end bears against the bracket .53, while at its other end said spring bears against a collar 59 rigidly secured to the bar 52. This spring is .the spring for shifting the belt shifter above referred to, and normally operates to 'hold the forked arm 51 thrown to therighh as viewed in Fig. 3, which will carry the belt shifter, so as to hold the belt on the loose pulley. \Vhen the treadle connected with the rod 38 is depressed, the belt is moved to the fast pulley and the spring 58 compressed.

The stop cam 45 is formed with a lead 60, so that when the stop lug is moved from the position shown in Fig. 3 to the right, the end of the stop lug may slide along this lead, so as to he brought into line with the stop cam. The stop cam is formed with an eccentric portion 61, which will engage the stop lug 46 and force the same to the right, as viewed in Fig. 4, which will compress the spring 50 and gradually stop the machine. This The left hand eccentric portion of the stop cam, under northrown into operation, throu h the common rock shaft 35, which contro s not only-the position of the stopping lug, but also the position of the belt shifter. If, however, the

eccentric portion of the stop cam is not, sutlicient to bring the parts to rest, with the stop lug in the recess 63, which is the normal stopping position, the ovel'running of the arts will carry the stop lug up the-inclined ace 63 on the stop cam, and cause the movements of the parts to cease. The tension of the spring 50 on the stop lug 46 will then rotate the stop cam in the opposite direction, as shown in Fig. 7, so as to bring the stop lug 46 into the recess 62, or the parts into normal stopping position. This'stop cam 45 is so positioned (in the main shaft, that'when the stop lug is in the recess 62 the bender will be raised from the material and the needle withdrawn from the material, so as to allow the free feed of the same. This samemovement of the rock shaft 35 which shifts the belt and stops the machine,

will, through the movement. of the rod 52, swing the rock shaft 56, which will cause the arm 57 to engage the rod 26 connected with the presser lever, and thus raise the Presser foot from the material. The lifting of the presser lever will, through the finger I 30, also release the tension on the needle the'stop lug, shift the beltto the fast pulley on the driving shaft, lower the presser foot on the material, restore the tension on the needle thread, and the machine is thus means to prevent the abnormal shifting placed in roper order for stitching. It will h e noted from the above descrip tion, that I have provided a construction wherein the active elements of the sewing machine and the controlling devices includ mg the belt shifter and stop mechanisms, are

all housed within a hollow casing, so that all liability of the material beingoperated upon coming into contact with the moving parts of the machine, so as to clog or break the same, is avoided. It will be further noted that I have provided an arrangement of parts wherein the work support may be readily raised, carrying with it the stitchfornning elements, and the parts directly cooperating therewith, the driving shaft and the driving pulley carried thereby, and access to the various parts may be readily had. It will also'be noted that I have provided of the belt,that is, the shifting of the belt when the work support is raised, which would merely result in throwing off the belt.

It will be obvious from certain aspects cit the invention, that certain of the parts herein descrlbed may be varied 1n construction,

and also that the arrangement of parts may omitted or that otlf'er features may be added tb the machine, without modifying the effective action of. the parts herein described, and without departing from the spirit of the inve'ntion, as set. forth in the appended claims.

Having thus described my invention, what I claim as new and desire to secure by Let ters Patent, is

1. The combination of a hollow casing comprising a supportingbase and a work support movable relative to the base, stitchforming mechanism supported by and movable with the work support, a power shaft for operating the stitch-forming mechanism, said power shaft being mounted to move with the work support, a fast pulley mounted on the powershaft, a loose pulley supported by the base and in axial alinement with the fast pulley when the work support is in normal position, a driving belt, a beltshifter, and means for locking the belt shifter when the work support is moved from its normal position.

2. The combination of a hollow casing comprising a supporting base and a work support mounted to swing relative to the base, stitch-forming mechanism supported by and movable with the work support, brackets carried by said. Work support, a power shaftjournaled in said brackets, 21 fast pulley mounted on said power shaft,a loose pulley supported by thebase and in axial alinement with the fast pulley when the work suoport is in normal position, a

.driving belt, a belt shifter, and means for locking the belt shifter when the work support is moved from its normal position.

3. The combination of a hollow casing comprising a supporting base and a work support movable relative to the base, stitchforming meohanisnna power shaft within said casing and supported by said work support and having a fast pulley thereon, a driving belt, a loose pulley supported within said casing and in axial alinement with said fast pulley when said worksupport is in normal position, and a belt shifter within said casing.

4. The combination of a hollow casing comprising a supporting base and a work support movable relative to the base, stitchforming mechanism, a power sha ft supported by said work support within said casing and having a fast pulley thereon, a driving belt, a loose pulley supported by .said base within said casing and confronting said fast pulley when the work support is closed, a manuall'-actuated belt shifter within said casing, and means for locking said belt shifter when the work support is open.

5. The combination of a hollow casing comprising a supporting base and a work support movable relative to the base, stitchforming mechanism, a power shaft within said casing supported by said work support and having a fast pulley thereon,-a driving belt, a loose pulley supported by said base and confronting said fast. pulley when the work support is closed, a iminually-actuated belt shifter, and means controlled by said work support for locking said belt shifter with the belt in engagement with the loose pulley when said work support is open.

6. The combination of a hollow casing comprising a supporting base and a work support movable relative to the base, stitchforming mechanism, a power shaft within said casing supported by said work support and having a fast pulley thereon, a driving belt, a loose pulley supported by said base within said casing and confronting the fast pulley when the work support is closed, a belt shifter, a spring-pressed latch for locking said'belt shifter in position to hold said belt on the loose pulley, and means on said work support for moving said latch into inactive position when said work support is closed.

7. The combination of a hollow casing comprising a supporting base and a work support movable relative to the base, stitchforming mechanism mounted on and movable with the work support, a power shaft mounted on the work support within the cas ingand having a fast pulley thereon, a driving belt, a loose pulley supportedby said base within said casing and confronting the fast pulley when the work support in closed, a belt shifter including a lever, a spring- .pressed latch having a shoulder for engaging said lever for holding the belt shifter with the belt on the'loose pulley, and a cam on said work support for engaging the latch and moving the same to inactive position when the work support is closed.

8. The combination of a ,hollow casing comprising a sipporting base and a work support hinge thereto, stitch-forming mechanism mountedbeneath said work sup- ,port and supported thereby, feeding mechanism located within said casing and sup- ,porte lby the :work support, -,,a ,power shaft mechanism mounted beneath the work support aml supported thereby, a driving shaft mounted on the work support and having a member by which it may be driven, a driven member carried by the supportin base, said members being'located in said be low casing and confronting when the work support is in normal position, whereby the driving shaft may have power imparted thereto through the medium of said member thereon, said driving and driven members being laterally separated, whereby said work support may be raised.

'10. The combination of a supporting base, a work support movable relative thereto, stiteh-fmaning mechanism, a driving.shaft for the stitch-forming mechanisnr located between the work support and said base, a

mounted on said base and confronting said fast pulley when the work support is closed,

a rock shaft mounted on said base, a belt shifter :arried by said rock shaft, a stop mechanism cooperating with said drivin shaft, and means carried by said rock shaft for operating said stop mechanism.

11. The combination of a supporting base, a work support movable relative thereto, stitch-forming mechanism, a driving shaft for 'the stitch-forming mechanism located between the work support and base, a fast pulley on said shaft. a loose pulley mounted on said base and confronting said fast pulley when the work support is closed, a rock shaft mounted on said base and extending at right angles to the driving shaft, a belt shifter carried by said rock shaft, a stop mechanism mounted on the work support and cooperating with said driving shaft, and an arm carried by the rock shaft for operating said stop mechanism.

12. The combination of a supporting'base,

.a work support movable relative thereto,

stitch-forming mechanism, a driving shaft for the stitch-forming mechanism located between the work support and base, a fast pulley on said shaft, a loose pulley mounted on said baseand confronting said fast pulley when-the work support is closed, a rock shaft mounted on said base and extending at right angles to the driving shaft,

'a belt shifter carried by said rock shaft,

a stop mechanism mounted on the work support and cooperating with said driv ng shaft, an arm carried b the rock shaft for operating the stop mec anism, a lever for shifting said rock shaft, and means for.

locking said lever from movement when the work support is open.

13. The combination of a supporting base, a. work support movable relative thereto, stitchfo-rming mechanism, a driving shaft for the stitchforming mechanism mounted on the work support, a fast pulley on said shaft, a loose pulley mounted on the base work support, a driving shaft for the stitch forming mechanismmounted on the work support, a fast pulley on said shaft, a loose pulley mounted on the base and confronting said fast pulley, a prcsser foot, a rock shaft mounted on said base and extending at right angles to the driving shaft, a belt shifter carried by said rock shaft, a stop mechanism codperating with said driving shaft and connected with said presser foot, whereby when said stop Incchanism is rendered effective the presser foot is raised. and an arm carried by said rock shaft for operating said stop mechanism. v

15. The combination of stitch-forming mechanism, a driving shaft for operating said stitch-forming mechanism. and mechanism for stopping the machinewith the movin parts thereof in a predetermined position including a stop cam and aspring pressed stop member cotiperating therewith, said cam having an active surface comprising an eccentric portion. a depression in the rear of said eccentric portion, and a'second eccentric portion in the rear of the depression having such a pitch or shape as to permit. the stop member to pass the depression as the driving shaft is ,c'ominp to rest and cause said stop member to run back over said second eccentric portion and to come to a final stop in said depression.

16. The combination with a work support,

' feeding mechanism, stitch-forming mechanism, a bender, means for positively moving said bender to bend the material into the path of the needleand for retracting the bender to allow free feed of the material, and a mamiallycontrolled stop mechanism including devices for stopping the machine with the bender in a predetermined position and retracted from thematerial.

17, The combination with a work support, feeding mechanism, stitch-forming mecha- 1,oao,sa2 I nism havinga reciprocating needle moving in. a directionsubstantially parallel with the work support, a bender, means for posit-ively moving said bender .to bend the material into the path of the needle and for positively retracting the bender to allow free feed of the material, and a manuallycontrolled stop mechanism for stopping the machine with the bender ina predetermined position and "retracted from the material.

18. The combination with a work sup-- port, feeding mechanism, stitch-forming mechanism having a reciprocating needle moving in a direction'substantial'ly parallel with the worksupportand beneath the same, a bender, means for positively reciprocating said bender for bending the material .into the path of the needle, and a manually-controlled stop mechanism having means for automatically stopping the machine with the needle withdrawn from the material, and the bender in predetermined retracted position.

19. The combination of a hollow. casing comprising a supporting base and a work supporhslitc-h forming mechanism including a needle located beneath the work support and moving in a direction parallel thereto, a power shaft within the casing, a fast pulley secured to the power shaft-and located within said casing, a bender, means for positively moving the bender to bendthe material into the path of the needle and for retracting the bender to allow the free feed of the material, and a manually controlled stop mechanism including devices for stopping the machine with the bender in a predetermined position and retracted from the material, and with the needle withdrawn from the material. I

20. The combination of a hollow casing comprising a sui'iportingbase and a worksupport, stitch forming mechanism including a needle located beneath the work support, and moving in a direction parallel thereto, a power shaft within the casing, a fast. pulley secured to the power shaft and located within said casing, a bender, means for positively moving the bender to bend the material into the path of the needle and for retracting the benderto allow thefree feed of the material, and a manuallycontrolled stop mechanism including a spring-- pressed stop lug, and a cooperatlng stop cam, said stop cam having an eccentric portion, a recess in. the. rear of said eccentric portion for engaging the stop lug when the bender is retracted from the material, and an inclined portion in'rear of said recess for engaging the stow lug-on the over-running of the machine or stopping the parts and returning the same so that said step lug will restin said recess.

21. A sewing machine, including in comhination e Work support, a needle mounted in a plane parallel thereto, means for bending the material into the path of the needle, :1, presser foot for engaging the material and holding the some on the Work support, a tension device for the needle thread, a lever for supporting the presser foot, said lever having an arm operating to release the tension beneath the Work support and reciprocating when said presser foot is raised from the 10 material.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

GEORGE S. HILL.

Witnesses:

ELMER B. GRUsH, NORMAN C. HUssEY. 

